Improvement in scaffolding



H. J. CASWELL.

S'CAFFULDING.

zshe'ete-sheew resented sept. 4,1877'.

ANo.

. EI'EHSv PHDTO-LI'LHOGRA HER, WASHIN 0 l UNITED STATES PATENT OFFICE,

HENRY JAMES OASWELL, OF DUDSWELL, QUEBEC, CANADA.

IMPROVEMENT IN SCAFFOLDING.

Specification forming part of Letters Patent No. 194,802, datedSeptember 4, 1877; application led July 12, 1877.

To all 'whom it may concern:

Be it known that I, HENRY JAMES GAS WELL, of Dudswell, in the county ofWolfe and Province of Quebec, have invented certain new and usefulImprovements in Stagings for Carpenters7 and Painters Use; and I dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specication.

The object of this invention is to provide a system of adjustablebrackets which can be4 attached to the roof of a building, and which areconnected by and support a rope, upon which runsa traveling carrierhaving suspended beneath a chariot or car, in whichthe operator can sitwhile at work, or when moving -the chariot in a vertical or horizontalposition, to enable him to reach any desired spot on the walls or jet ofthe building.

The invention consists, first, in the combination of grooved pulleys,adjustable brackets and bolts, in such a manner that the said bracketscan be readily attached to the roofs of buildings of whatever form.

The invention also consists in the use of a chariot which can be raisedor lowered or moved in a horizontal direction by means of ropes workin gthrough a compound pulleyblock or traveling carrier, as hereinafter morefully described.

A is thegable-bracket, B the eaves-bracket, and C the track upon whichthe traveling carrier D travels, carrying with it, and suspended fromit, the car E.

The gable-bracket A is secured to the building by means of two arms, aand b, the upper arm, a, resting upon, and provided with, an armapproximately conforming to the shape of the roof, and the lower arm breaching beneath the projecting end of the roof, while both a and b aremade to clamp the portion of roof embraced by the said arms by means ofa bolt, c. For adj usting this bracket to other forms and thicknesses ofroofs, holes d are provided, in which a tongue, formed upon one end ofthe arm b,'ts. The threaded portion of the bolt c is of sufficientlength to enable the nut to be screwed against the lower surface of thearm b with any adjustment of the said bracket.

The eaves-bracket B is made to clamp the lower corner of the gable inthe same manner as the gable-bracket A; but, owing t0 the shape of thispart of t-he roof, the pro jecting arms are modified to suit such shape,as shown in Figs. 3 and 4. This bracket carries at its outer portion aquarter-circle, c, with rings or eyes at each upper corner, throughwhich the track G passes.

The object of this quarter-circle is to enable the grooved pulley a,Within the upper part of the traveling carrier D, to pass around, whilethe rings serve to keep the track C in place, and at the same time allowit to render freely through when necessary.

To the vertical part of the gable-bracket A, near the top, is ,rigidlyattached a stud, upon Which is mounted a pulley, f, over which the trackU passes, as shown in Fig. 1.

The car E is suspended by ropes j passing over grooved pulleys near themiddle of the horizontal portion of the traveling carrier D. 'lhe endsof these ropes the operator can secure to the car after having raised orlowered it to the desired height.

The cord g enables the operator to move the car to the right or left onthe track C, and is rove through and over pulleys in either end of thehorizontal portion of the traveling carrier D; then,'nearly parallelwith the track U, t0 the pulley h in the upper horizontal part of thegable-bracket A; then back tothe bail t' on the traveling carrier. Bydrawing 0n the right-hand cord g the car will be moved to the right, andvice versa. When the traveling carrier has been drawn to the apex of thegable, and is about to pass to the other side, the cord g is thrown overthe pulley h with the object of making the draft of the cord g approachmore nearly to a horizontal position, to enable the traveling carrier,with its load, to be drawn back over the pulley f to its originalposition, when desired, the bail i swinging over automatically to theproper line of draft.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination of the brackets A and B with thetrack C, pulleys f h, and quartercircle e, substantially as described.

2. The combination, with the carrier D, supporting-ear E, and track C,the cord g, substantially as and for the purpose set forth.

3. In combination with a traveling` carrier,

D, a supporting-car, E, ropes j, and. cord g, substantially as and forthe purpose hereinbefore set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

HENRY JAMES CASWELL.

Witnesses: i

GEORGE CADE, F. A. WIswELL.

